Recombinant Der p 23 (RP-DP23-1)

Allergen: Der p 23 (Dermatophagoides pteronyssinus allergen 23.0101)

Common name: House dust mite

Unit: 250µg

Source: Pichia pastoris

Mol. Wt: 8 kD (rDer p 23 migrates at 16-18kD, see note)

Purification: Multi-step chromatographic purification. Purity > 95 % by silver stained SDS PAGE.

Concentration: See product insert.

Formulation: Preservative-free and carrier-free in phosphate buffered saline, pH 7.4.  Sterile filtered.

Storage: Store at -20◦C. Re-freeze unused portion and aliquot into smaller quantities to avoid freeze/thaw cycles. Gently defrost at room temperature.

Notes: (1) rDer p 23.0101 has a C-terminal 6xHis-tag. (2) rDer p 23.0101 migrates at 16-18kD on SDS-PAGE under reducing conditions. However, the calculated and actual molecular mass is 8kD. (Weghofer, M. et al. J Immunology 190,2013)

Product Resources: Der p 23.0101 Certificate of Analysis

Allergens are provided for research and commercial use in vitro:  not for human in vivo or therapeutic use.